ou know," Frank remarked.

"Sure! I see now what you are hitting at," Bob observed; "the old Indian
must have had money, as all his kind have, what with the tips given by
tourists day after day. He could have come to Grand View on the train.
Frank, once more I knuckle down to your superior wisdom. That's what
Havasupai must have done, sure pop!"

"Anyhow," the other continued, "it pleases me to believe so; and that
the Moqui is even now hurrying to make connections with the hermit in
this mysterious Echo Cave. There's still another reason, though, why I
picked out this course up the river, instead of going down. It is
connected with the fact that the Moquis have their homes in this
quarter."

"Oh!" exclaimed Bob, "I catch on now to what you mean. The chances are
that the Moqui would be prowling around within fifty miles of his own
shack when he ran across the man-with-the-shining-spot-in-his-head,
otherwise the bald Professor Oswald."

"That's the point, Bob."

"It sure beats everything how you can get on to these things, Frank.
Here I'm going to be a lawyer some day, so they tell me; and yet I don't
seem to grab the fine points of this game of hide-and-seek as you do."

"Oh! well," Frank remarked, consolingly; "a lawyer isn't supposed to
know much about trails, and all such things. That comes to a fellow who
has spent years outdoors, studying things around him, and keeping his
wits on edge all the while."

"I hope to keep on learning more and more right along," said Bob.

"Here comes John Henry back, to tell us he has found a good place for
camping to-night; so no more at present, Bob."

It proved just as Frank had said. The guide declared that as the sun was
low down, the canyon would soon be darkening; and they ought to make a
halt while the chance was still good to see what lay around them.

Accordingly they made a camp, and not a great distance away from the
border of the swirling river that rolled on to pass through all the
balance of that wonderful gulch, the greatest in the known world.

They had come prepared for this, carrying quite a number of things along
that would prove welcome at supper time. A cheery fire was soon blazing,
and the guide busied himself in preparations for a meal; while the two
boys wandered down to the edge of the river, to throw a few rocks into
the current, and talk undisturbed.

"There are several other camps not far away," remarked Frank. "I could
see the smoke rising in